Play games
Choose the game that interests you and play itfor free.
Complete the quests
Every game has some quests for which you will receive Soul Gems.
Receive rewards
You can exchange your Soul Gems for Steam Wallet top-ups, game keys, CS:GO Skins and other rewards.
So I downloaded the game hag app because it said you can use it to find new way to earn soul gems, but it seems like there's less ways to earn them. Am I missing something?